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Performance of Calves Fed Milk Replacer Once Daily at Various Fluid Intakes and Dry Matter Concentrations¹

Department of Dairy Science, Clemson University, Clemson, SC 29631

ABSTRACT

Ninety-six Holstein calves were fed 1 of 12 liquid diets once daily under two feeding options. Diets consisted of milk replacer (22% crude protein, 10% fat) fed at fluid intakes of 6, 8, and 10% body weight and dry matter concentrations of 10, 13, 16, and 19%. Feeding options consisted of calculating fluid intake and dry matter concentration based on initial weight and holding this constant through weaning or adjusting weekly according to change in body weight. Water and a complete calf starter (minimum 15% crude protein) were available ad libitum. Calves were weaned abruptly at 4 wk of age and observed until 6 wk of age for immediate postweaning performance. Fluid intake and dry matter concentration had a positive effect on weight gain during wk 0 to 4. However, during the immediate postweaning period, gain decreased in calves previously fed replacer at the higher intake. Overall gain (wk 0 to 6) was not affected by fluid intake or dry matter concentration. Starter intake decreased with increasing fluid intake or dry matter concentration during wk 4 and wk 0 to 4. Total intakes of dry matter were not affected by treatment. Incidence of scours increased linearly with dry matter concentration, and both fluid intake and dry matter concentration had a positive linear effect on fecal score and duration of scours. Feeding option had no effect on any measures. Calves fed replacer containing between 10 and 13% dry matter and offered at 8% body weight had fewer intestinal disturbances during the replacer feeding period and obtained recommended gains over the entire 6 wk.

¹ Technical Contribution No. 1974. Published with the approval of the Director, South Carolina Agricultural Experiment Station.

² Department of Experimental Statistics, Clemson University.